package net.minecraft.inventory;

import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.entity.player.InventoryPlayer;
import net.minecraft.init.Blocks;
import net.minecraft.item.ItemStack;
import net.minecraft.item.crafting.CraftingManager;
import net.minecraft.util.BlockPos;
import net.minecraft.world.World;

public class ContainerWorkbench extends Container {
	/** The crafting matrix inventory (3x3). */
	public InventoryCrafting craftMatrix = new InventoryCrafting(this, 3, 3);
	public IInventory craftResult = new InventoryCraftResult();
	private World worldObj;

	/** Position of the workbench */
	private BlockPos pos;

	public ContainerWorkbench(InventoryPlayer playerInventory, World worldIn, BlockPos posIn) {
		this.worldObj = worldIn;
		this.pos = posIn;
		this.addSlotToContainer(
				new SlotCrafting(playerInventory.player, this.craftMatrix, this.craftResult, 0, 124, 35));

		for (int i = 0; i < 3; ++i) {
			for (int j = 0; j < 3; ++j) {
				this.addSlotToContainer(new Slot(this.craftMatrix, j + i * 3, 30 + j * 18, 17 + i * 18));
			}
		}

		for (int k = 0; k < 3; ++k) {
			for (int i1 = 0; i1 < 9; ++i1) {
				this.addSlotToContainer(new Slot(playerInventory, i1 + k * 9 + 9, 8 + i1 * 18, 84 + k * 18));
			}
		}

		for (int l = 0; l < 9; ++l) {
			this.addSlotToContainer(new Slot(playerInventory, l, 8 + l * 18, 142));
		}

		this.onCraftMatrixChanged(this.craftMatrix);
	}

	/**
	 * Callback for when the crafting matrix is changed.
	 */
	public void onCraftMatrixChanged(IInventory inventoryIn) {
		this.craftResult.setInventorySlotContents(0,
				CraftingManager.getInstance().findMatchingRecipe(this.craftMatrix, this.worldObj));
	}

	/**
	 * Called when the container is closed.
	 */
	public void onContainerClosed(EntityPlayer playerIn) {
		super.onContainerClosed(playerIn);

		if (!this.worldObj.isRemote) {
			for (int i = 0; i < 9; ++i) {
				ItemStack itemstack = this.craftMatrix.removeStackFromSlot(i);

				if (itemstack != null) {
					playerIn.dropPlayerItemWithRandomChoice(itemstack, false);
				}
			}
		}
	}

	public boolean canInteractWith(EntityPlayer playerIn) {
		return this.worldObj.getBlockState(this.pos).getBlock() != Blocks.crafting_table ? false
				: playerIn.getDistanceSq((double) this.pos.getX() + 0.5D, (double) this.pos.getY() + 0.5D,
						(double) this.pos.getZ() + 0.5D) <= 64.0D;
	}

	/**
	 * Take a stack from the specified inventory slot.
	 */
	public ItemStack transferStackInSlot(EntityPlayer playerIn, int index) {
		ItemStack itemstack = null;
		Slot slot = (Slot) this.inventorySlots.get(index);

		if (slot != null && slot.getHasStack()) {
			ItemStack itemstack1 = slot.getStack();
			itemstack = itemstack1.copy();

			if (index == 0) {
				if (!this.mergeItemStack(itemstack1, 10, 46, true)) {
					return null;
				}

				slot.onSlotChange(itemstack1, itemstack);
			} else if (index >= 10 && index < 37) {
				if (!this.mergeItemStack(itemstack1, 37, 46, false)) {
					return null;
				}
			} else if (index >= 37 && index < 46) {
				if (!this.mergeItemStack(itemstack1, 10, 37, false)) {
					return null;
				}
			} else if (!this.mergeItemStack(itemstack1, 10, 46, false)) {
				return null;
			}

			if (itemstack1.stackSize == 0) {
				slot.putStack((ItemStack) null);
			} else {
				slot.onSlotChanged();
			}

			if (itemstack1.stackSize == itemstack.stackSize) {
				return null;
			}

			slot.onPickupFromSlot(playerIn, itemstack1);
		}

		return itemstack;
	}

	/**
	 * Called to determine if the current slot is valid for the stack merging
	 * (double-click) code. The stack passed in is null for the initial slot that
	 * was double-clicked.
	 */
	public boolean canMergeSlot(ItemStack stack, Slot p_94530_2_) {
		return p_94530_2_.inventory != this.craftResult && super.canMergeSlot(stack, p_94530_2_);
	}
}
